China is heavily investing on Africa, so I would not be impressed if Africans start learning Mandarin more actively than they do now. African population is the one experiencing the fastest growth at the moment.
In the Americas, I would expect things to remain more or less the same.
Historically, the Chinese have been very hermetic when it comes to foreign policy. Chinese yuans (RMB) are not as liquid as dollars, and that seems intentional as they want to keep tight control of their currency value. But they do seem more expansive recently... opening overseas military bases in Djibouti, etc.